Gage.



J. A. L. SNYDER.

GAGE.

APPLIOATION FILED OCT- 2, 1911.

LU4A,588 Patented Nov. 19, 1912.

JOHN A. L. SNYDER, OF SOMIS, CALIFORNIA.

GAGE.

Specification of Letters Patent.

Patented Nov. 19, 1912.

Application filed October 2, 1911. Serial No. 652,328.

To all whom it may concern:

Be it known that 1, JOHN A. L. SNYDER, a citizen of the United States,residing at Somis, in the county of Ventura and State of California,have invented a new and useful Gage, of which the following is aspecification.

It is the objectof the present invention to provide a micrometer gage inwhich the beam is set approximately, novel means being provided foradvancing the stop portion of the gage by fine adjustments, means beingprovided for locking the movable parts.

A further object of the invention is to improve generally, devices ofthe type to which the present invention appertains.

With the foregoing and other objects in view which will appear as thedescription proceeds, the invention resides in the combination andarrangement of parts and in the details of construction hereinafterdescribed and claimed, it being understood that changes in the preciseembodiment of invention herein disclosed can be made within the scope ofwhat is claimed without departing-from the spirit of the invention.

In the drawings, Figure 1 shows the invention in side elevation; Fig. 2is a longitudinal section, parts appearing in elevation; Fig. 3 isan'enlarged elevation, the device being viewed atright angles to theshowing of Fig. 1, the binding sleeve being retracted, and parts beingbroken away; Fig. 4 is a transverse section on the line AB of Fig. 2;Fig. 5 'is a transverse section upon the line CD of Fig. 2; and Fig. 6is a transverse section on the line E-F of Fig. 2.

1n carrying out the invention there is provided as a primary element, abeam 1, preferably of'circular cross section, the beam 1 carrying at itsouter end a scriber 2, presupposing that the device is to be used as ascratch gage. The beam 1 is slidable in a stop denoted generally by thenumeral 3 in Fig. 1. The stop 3 comprises a head 4 disposed transverselyof the beam 1, and a rearwardly extended tubular neck 5, surrounding thebeam, but spaced therefrom. In its interior, the neck 5 at its rear end,is of circular configuration, as shownat 6, this portion of the neckbeing internally threaded as shown at 7. The bore of the neck 5 is reuced adjacent the head 4: to form a mortise 8, having parallel sides.There is an opening 9 in the head 1 of the stop 3, in

which opening the beam 1 fits closely, yet slidably, the bore of theneck 5 being of much greater diameter than the'diameter of the beam 1.

The invention further includes a tubular core denoted generally by thenumeral 10. The forward end of the core 10 is received within the neck 5of the stop 3, the extreme forward end of the core 10 being formed intoa flattened tongue 11, adapted to fit slidably, yet against rotation, inthe mortise 8 which lies at the forward end of the bore of the neck Tothe rear of the tongue 11, the core is decreased in diameter, to form ashoulder 12, and to the rear of the shoulder 12, a nut, denotedgenerally by the numeral 14:, is mounted torotate freely upon the core10. The nut 14 comprises a forwardly extended neck 15 whieliembraces thecore 10 closely, and an outstanding, milled head 16. The outer surfaceof the neck 15 is threaded to engage with the internally threadedportion 7 of the neck 5 which constitutes a part of the'stop 3. v

Mounted loosely upon the core 10, to the rear of the head 16'of the nut14 is a washer 17, provided in its interior with a slot 18 extendedlongitudinally of the beam 1, there being a pin 19 outstanding from thecore 10, to register in the slot 18, whereby the washer 17 will beprevented from having rotatory movement upon the core 10, although theconstruction is such that the washer 17 may have a sliding movement uponthe core 10, longitudinally of the same.

The rear end of the core 10 is threaded.

as denoted by the numeral 20, and mounted upon this threaded portion 20is a polygonal nut 21, adapted to be disposed to the rear of the washer17, to hold the same in place, without however, causing the washer 17 tobind against the head 16 of the nut 14. A binding sleeve 22 is threadedupon the portion 20 of the core 10, the sleeve 22 having a recess 23 inits forward end, adapted to receive the nut 21, the construction beingsuch that the sleeve 22 may be advanced beyond the nut 21, to engagewith the washer 17.

The invention further includes a set of screws 24, adapted to preventrelative movement between the core 10 and the beam 1.

This set screw 24 may be variously posi-- tioned, without jeopardizingits utility. In the present instance, the set screw 21 15 threaded intothe core 10, adjacent the forward end of the core, there being alongitudinal slot 25 in the neck 5 of the stop 3, to

permit relative movement between the head 4 and the beam 1, when thebeam 1 is held against movement with respect to the core 10.- It is tobe noted that the beam 1 is eccentrically disposed with respect to theparts which inclose it. This eccentric disposition of the beam 1 is,primarily, for the purpose of thickening the core 10 to one side of thebeam, whereby a proper hold may be secured for set screw 24; although,obviously, the device would operate satisfactorily, if the beam 1 werediflerently positioned.

T he operation of the device is as follows. The set screw 24: isloosened, so that the beam 1 may slide longitudinally in the core 10,and when the scriber 2 and the forward face of the stop 3 have beenapproximately spaced, the set screw 2a is manipulated to engage the beam1, and to bind the beam 1 against relative movement with respect to thecore 10. The nut 14c is then rotated through the medium of its milledhead 16. The nut 14: cannot move forwardly, because it is engaged at oneend. by the shoulder 12 of the core 10. The nut cannot move rearwardly,saving to an infinitesimal extent only, because it is engaged by thewasher. 17, the washer 17 being maintained in place by the nut 21.Therefore, when the nut 14: is rotated, the engagement between thethreaded neck 15 of the nut, and the threaded portion 7 of the neck 5',will serve to adjust slowly and, to a nicet-y, the position of the head41-. When the desired adjustment has been secured, the sleeve 22 may berotated upon the threaded portion 20 of the core 10, to engage thewasher 17 and to force the washer into engagement with the head 16 ofthe nut 14, whereupon the forward end of the neck 15 will be boundagainst the shoulder 12, thus locking the parts against movement.

The engagement between the tongue 11 of the core 10 and the mortise 8 ofthe neck 5 of the stop 3, serves to prevent relative rotatory movementbetween the stop and the core 10. This movement is also prevented byreason of the fact that the set screw 24 engages through the slot 25 inthe neck 5 However, the mortise and tenon engagement nee-ease 811' willprevent rotatory movement between the parts, and permit the set screw 24to be difierently positioned, when desired.

Having thus described the invention, what is claimed is z 1. A device ofthe class described comprising a beam; a stop slidable upon the beam; acore slidable upon the beam within the stop; means for preventingrelative movement between the core and the beam; a nut rotatable uponthe core and having threaded engagement with the stop; a washer slidableupon the core and adapted to engage the nut; and a binding memberthreaded upon the core and adapted to engage the washer.

2. A device of the class described comprising a beam; a stop slidableupon the beam; a core slidable upon the beam; means for preventingrelative movement between the core and the beam; a nut rotatable uponthe core, and having threaded engagement with the stop; a washerslidable upon the core and adapted to engage the nut; a second nutthreaded upon the core at the rear of the washer and constituting ameans for limiting the sliding movement of the washer; and a bindingmember threaded upon the core to the rear of the second nut and adaptedto extend past the second nut, into engagement with the washer.

3. A device of the class described comprising a beam; a core slidableupon the beam; means for preventing relative movement be tween the coreand the beam; a binding member threaded upon the core and having arecess in its forward end; a nut threaded upon the core and receivedwithin said recess; a washer upon thecore in advance of the nut, andadapted to be engaged by the binding member for movement longitudinallyof the core; a stop slidable upon the beam, and means for advancing andretracting the stop, the washer engaging said. means to prevent movementof the stop.

In testimony that I claim the foregoing as my own, I have hereto aflixedmyrsignature in the presence of two witnesses.

JOHN an. snvnna.

Witnesses:

F. W. Molnar/nun, J. W. BOTHINBURG.

